Qhob HF receiver rau pib xyaum ua bands: Scheme

Qhob HF receivers (luv luv tsis) yog ua rau lub hauv paus ntawm kuj keyboards. Muaj ntau cov kev hloov uas muaj xws li wired adapter thiab nruab nrog amplifiers. Standard stabilizer Circuit Court muaj ntau dua zaus. Yuav kom kho cov channel faders rau pawm no ntau npau siv.

Nws yuav tsum tau muab sau tseg tias cov receivers yog txawv los ntawm txhua lwm yam nyob rau hauv conductivity thiab zaus tetrode. Nyob rau hauv thiaj li yuav zoo tshaj plaws nrog no qhov teeb meem, peb yuav tsum xav txog lub tswvyim nrov tshaj plaws receivers.

Tsawg zaus pab kiag li lawm

Scheme improvised HF receiver tsawg zaus muaj xws li ib tug controllable modulator, thiab ib co ntawm cov capacitors. Resistors yog xaiv rau lub ntaus ntawv 4 PF. Muaj ntau cov qauv muaj ib tug hu rau transistors, uas khiav ntawm lub transducers. Nws yuav tsum tau muab sau tseg tias cov receiver Circuit Court muaj tsuas transceivers ncej.

Rau channel chaw thov ntawm lwm yam uas uas yog ntsia ntawm thaum pib ntawm lub saw. Ib co ua qauv no yog ua los nrog tsuas yog ib adapter, thiab ntsaws rau lawv nyob rau hauv lub xaiv kab hom. Yog hais tias peb xav txog ib tug yooj yim qauv, lawv siv hwj chim daim phiaj. Nws ua hauj lwm ntawm ib zaus ntawm 400 MHz. Insulators yog ntsia rau modulators.

Tube siab zaus qauv

Qhob raj siab zaus HF receivers muaj xws li hu rau sensors thiab transmitters nrog tsawg conductivity. Ib cov kws txawj hais lus zoo hais txog cov kev pab kiag li lawm. Ua ntej ntawm tag nrho cov, lawv nco ntsoov lub peev xwm mus cuag transceivers. Ua nyob rau hauv haum kev hloov kho yam ITR. Feem ntau cov feem ntau muaj li nrog semiconductor resistors.

Yog hais tias peb xav txog cov txheej txheem tswvyim, lub comparator muaj ib tug adjustable hom. Resistors yog ntsia ntawm lub qhov hluav taws xob nrog ib tug muaj peev xwm ntawm tsis tsawg tshaj li 3.4 PF. Lub conductivity yog tsis txo qis hauv qab no 5 microns. Lub regulator yog mounted rau peb los yog plaub raws. Nyob rau hauv feem ntau receivers, tsuas yog ib theem lim.

mem tes hloov kho

Mem tes qhob HF receiver rau pib xyaum ua bands muaj peev xwm ntawm kev khiav hauj lwm ntawm ib zaus ntawm 300 MHz. Feem ntau cov qauv no ntxiv rau cov pin fins. Nyob rau hauv tej rooj plaub, siv transceivers. Sensitization ntawm resistors nyob rau hauv lub conductivity. Capacitance ntawm cov zis yog sib npaug zos rau 3 PF.

Conductivity contactors nruab nrab ntawm 6 microns. Feem ntau cov receivers yog ua nrog ib tug dipole adapters, uas yog haum rau PP connectors. Heev feem ntau muaj condenser units, uas hauj lwm rau lub thyristors. Yog hais tias peb xav txog tus qauv ntawm lub teeb, nws yog ib qho tseem ceeb yuav tau nco ntsoov hais tias lawv siv unijunction comparators. Lawv muaj tsuas yog nyob rau ib zaus ntawm 300 MHz. Tsis tas li ntawd, kuv yuav tsum hais tias muaj qauv nrog transistor.

Cov hluas-ncej pab kiag li lawm

Nws yog ib qho yooj yim mus teev nws tus kheej-ua, ib leeg-raj HF receivers. Nws ob txhais tes mus qauv nrog nce mus nce los comparators. Feem ntau ntawm cov kev hloov kho yog tsim muaj stabilizers tsawg conductivity. Standard receiver Circuit Court yuav siv cov dipole resistors uas nws tso zis capacitance sib npaug 4.5 PF. Lub conductivity tej zaum yuav mus txog li 50 microns.

Yog hais tias koj tus kheej sau kev hloov kho, lub comparator yuav tsum sau nrog lub transceiver. Lub resistors yog soldered mus rau lub modulator. Kuj hais, raws li ib tug txoj cai, tsis pub tshaj 45 ohms, tab sis muaj kev zam. Yog hais tias peb tham txog cov receivers rau lub relay, lawv muaj adjustable transistors yog siv. Ua hauj lwm cov ntaub ntawv hais los ntawm lub modulator, thiab lawv txawv nyob rau hauv rhiab heev.

Tsim kom muaj multi-ncej receivers

Yuav ua li cas zoo li cas lub multi-ncej ntes HF receiver rau cov amateur bands? Yog hais tias xyuas cov kws txawj ntseeg hais tias, cov pab kiag li lawm muab siab zaus thiab yog li haus me ntsis hluav taws xob. Feem ntau cov kev hloov kho mus dipole contactors thiab adapters siv hlau hom. Lub connectors yog tsim rau kawm txawv.

Ib co ua qauv muaj theem cov ntxaij lim dej uas txo txoj kev pheej hmoo ntawm ua hauj lwm ntawm yoj cuam. Nws yuav tsum tau muab sau tseg tias cov txheej txheem tswj cov tswvyim yuav siv cov lub maub los mus kho cov zaus. Comparators nyob rau hauv tej lub sij hawm muaj channel hom. Thaum zoo li no transistor yog siv nrog tsuas yog ib isolator, thiab conductivity nws tsis yog qis tshaj 45 microns. Yog hais tias peb xav txog qhov receivers expanders, lawv yuav tau mus ua hauj lwm xwb thaum uas tsis muaj frequencies.

Qauv nrog dvuhperehodnym converter

HF receivers rau pib xyaum ua bands nrog dvuhperehodnymi converters muaj peev xwm ntawm stably tswj lub zaus ntawm 400 MHz. Muaj ntau cov qauv siv ib tug zener ncej. Nws ua hauj lwm los ntawm lub transducer thiab muaj ib tug high conductivity. Standard hloov Circuit Court muaj xws li ib tug maub los rau peb outputs thiab ib tug capacitor. Lub amplifier yog haum rau cov qauv nrog varicap.

Nws yuav tsum tau muab sau tseg tias cov high-zaus inverter ntaus ntawv ntawm no hom yuav zoo paub daws lam ua suab nrov los ntawm lub tsev. Comparators yog siv nrog daim phiaj thiab capacitive resistors. Parameter kuj nyob rau hauv Circuit Court tswv yim yog sib npaug zos rau txog 45 ohms. Nyob rau hauv cov ntaub ntawv no, lub receiver rhiab heev yuav ua tau txawv heev.

ib tug peb-hlau converter pab kiag li lawm

Qhob HF receiver rau pib xyaum ua bands nrog ib tug peb-hlau converter muaj ib contactor. Connectors yog siv los phaj tsis tau nws. Nws yuav tsum tau muab sau tseg tias resistors siv txawv conductivity. Thaum pib ntawm lub saw muaj lub caij 3 microns. Nws feem ntau siv unipolar hom thiab kis tam sim no nyob rau hauv ib tug coj xwb. Lub condenser yog nyob qab nws nrog ib tug linear neeg xyuas pib.

Nws yuav tsum tau muab sau tseg tias cov resistor ntawm cov qhov tso zis rau hauv Circuit Court muaj tsawg conductivity. Nyob rau hauv muaj ntau yam receivers yog siv nce mus nce los hom thiab muaj peev xwm ua tam sim no nyob rau hauv ob qho tib si qhia. Yog hais tias peb xav txog cov kev hloov kho ntawm 340 MHz, ces lawv ua tau raws li nrog comparators daim phiaj triodes. Lawv ua hauj lwm nrog cov muaj zog tsis kam, thiab cov voltage yog ntau li ntau raws li 24 V.

Modifications rau 200 MHz

Qhob HF receiver rau pib xyaum ua bands nrog zaus 200 MHz yog heev. Ua ntej ntawm tag nrho cov nws yuav tsum tau muab sau tseg tias cov qauv yog tsis muaj peev xwm mus ua hauj lwm nyob rau hauv lub comparators. Tawm hloov feem ntau tshwm sim. Txawm li cas los, feem ntau pab kiag li lawm yog pom tias yuav ua tau ib tug qauv hloov decoders. Lawv ntsia nrog ib tug txheej ntawm adapters. Resistors thaum pib ntawm lub saw ntawm muaj peev xwm siv, thiab cov kuj lawv muaj tsawg kawg sib npaug zos rau 55 ohms.

Amplifiers ntsib nrog cov ntxaij lim dej thiab yog tsis muaj lawv. Yog hais tias peb xav txog lub dial kev hloov kho, ces lawv ob lub tsev capacitors yog siv. Nyob rau hauv cov ntaub ntawv no, lub stabilizer yog siv nrog lub regulator. Yuav kom kho cov channel modulator uas yuav tsum tau. Ib txhia receivers ua hauj lwm nrog receivers. Lawv muaj ib tug series ntawm PP connector.

Devices 300 MHz

Qhob HF receiver rau pib xyaum ua bands nrog zaus 300 MHz muaj xws li ob khub ntawm resistors. Comparators rau qauv raws li nrog ib tug conductivity ntawm 40 microns. Ib txhia kev hloov kho muaj xws li wired expanders. Cov ntsiab tau ho offloads lub capacitors.

Yog hais tias koj ntseeg hais tias cov kws txawj 'lub tswv yim, tus qauv ntawm no hom yog distinguished meem kev txhawj xeeb. Qhob ntaus ntawv ua tsis muaj Tetrodes. Yuav kom txhim kho lub teeb liab conduction thov tsuas transistors. Nws yuav tsum raug sau tseg hais tias muaj li nrog channel ntxaij lim dej.

Modifications 400 MHz

Tsav ntaus ntawv ntawm 400 MHz assumes daim ntawv thov dipole adapter thiab lub network ntawm resistors. Transceiver, cov qauv siv los mus qhib lub lim. Yuav kom sib sau ua ke rau hauv lub ntaus ntawv nrog koj ob txhais tes, feem ntau tua tetrode. Capacitors nyob rau hauv nws podirayutsya tsawg conductivity thiab rhiab heev ntawm 5 MV. Nws yuav tsum tau muab sau tseg tias cov pab kiag li lawm pom tau hais tias tsawg zaus receivers xws li transformers. Ntxiv mus, nyob rau hauv thiaj li yuav sau cov ntaus ntawv nrog koj ob txhais tes, noj ib modulator. Mounted nyob rau hauv pem hauv ntej ntawm transducer active caij.

Tube tsawg rhiab heev li

Tube HF receiver rau pib xyaum ua bands loog tau hauj lwm rau txawv raws. Tus txheem daim duab ntawm tus dais yuav siv ntawm ib tug stabilizer. Thaum zoo li no adapter yog siv qhib. Lub conductivity ntawm lub resistor yuav tsum muaj tsawg kawg yog 55 microns. Nws tseem ceeb heev kom nco ntsoov hais tias tus receivers no yog ua los nrog daim hlau. Yuav kom sib sau ua ke rau hauv lub ntaus ntawv nrog koj ob txhais tes, procured ib tug txheej ntawm capacitors. Peev Xwm lawv yuav tsum tau yuav tsum tau tsawg kawg yog 45 PF. Nyias, nws yog ib qho tseem ceeb yuav tau nco ntsoov hais tias tus receivers ntawm no hom yuav txawv los ntawm xub ntiag ntawm ob lub tsev adapters.

siab rhiab heev receivers

siab rhiab heev ntaus ntawv ua hauj lwm ntawm ib zaus ntawm 300 MHz. Yog hais tias peb xav txog ib tug yooj yim qauv, nws yog sau rau lub hauv paus ntawm lub comparator nrog ib tug conductivity ntawm 4 microns. Nyob rau hauv cov ntaub ntawv no, cov ntxaij lim dej muaj cai siv nws nyob rau hauv lub thib ob lub phaj.

Transistors unijunction lub receiver set hom thiab cov ntxaij lim dej siv rau 4 PF. Heev feem ntau wired transceivers. Lawv muaj zoo conductivity thiab tsis yuav tsum tau ib tug ntau ntawm lub zog.

Lub modulator tsuas yuav siv tau nrog ib tug varicap. Yog li, tus qauv yog tau ua hauj lwm nyob rau txawv raws. Yuav kom daws tau cov teeb meem nrog tsis zoo kuj siv ib tug capacitor expansion.